Siphon closet-bowl.



G. H. MUGKENHIRN.

SIPHON CLOSET BOWL.

APPLICATION FILED AUG. 29, 1910.

Patented Mar. 23, 1915.

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. 'panying drawings,

CHARLES H. MUGKENHIRN, 0F DETROIT, MICHIGAN, ASSIGNOR, BY MESNE ASSIGN MENTS, TO THE STANDARD SANITARY MANUFACTURING COMPANY, OF rrrrs- BURGH, PENNSYLVANIA, A CORPORATION o-E NEW JEEsEY. V

SIIEH ON CLOSET-BOWL.-

Specification of Letters Patent.

Application filed August 29, 1910. Serial No. 579,581.

To all whom/it may concern:

Be it known that I, C ARLES H. MUOKEN- HIRN, a citizen of the United States, residing at Detroit, county of Wayne, State of Michigan, have invented a certain new and useful Improvement in Siphon Closet- Bowls, and declare the following to be a full, clear, and exact same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accomwhich form a part of this specification. This invention bowls.

It has for its object an improvement adapted to be applied to that class of bowls known as siphon bowls, and its object is to' produce a flow of water which is similar in its effect to the well-known siphon jet, but this flow is produced entirely within the cavity of the bowl itself without using the by pass commonly-used to produce the true jet action and the bowl contains the washdown feature in combination with a strong flow of water inducing andcontinuing the discharge of water from the bowl upto the last moment of the emptying of the tank or other means from which the flushing water is fed;

The bowl with which'the improvement is connected is known by various names to the trade. It comprises a deep seal within the cavity of the bowl and a siphon discharge relates to water closet therefrom by means of which nearly all the seal water is removed when once siphon action has been established. In this respect it resembles the true siphon jet bowl from which it difi'ers in the manner of establishing early siphon action and maintaining such action after it would cease but for the force of the stream of water falling from the front of the rim through the groove.

In the present form ofbowl, other than the siphon jet bowl, the siphon action is started by the rising of water in the bowl until it rises to some point above the dam.

This point is not always the same in differcnt forms of construction and not always the same in the same bowl, but varies according to circumstances that cannot be foreseen and provided for, and the time required to inaugurate the discharge varies considerably;

sometimes it loes not begin until the water description of the j supply is exhausted or nearly exhausted and the siphon actionis practically a failure.

7 The accelerate the action of formed that a portion of the water which enters the bowl through the flushing rim is guided to the extreme front. thereof and is ward and traverses the groove between its walls or checks and arrives at the bottom of the groove (or at the surface of the water which fills the groove part way up) with increasing instead of diminishing when it reaches the point of contact with the water.

Patented Mar. 23, 1915.

then directed downpresent invention providesmea'ns to V the .d scharge'leg and consists essentlally in a depression or groove in the bowl so V considerable force and with a force that-is The force of the dropping water accentuated by the fact that it is not only dropping but concentrating by the shape of the groove communicatesmotion to the water in the bowl and serves to start the siphon action in exactly the samejmanner that the jet startsthe siphon action. As the water drops in the bowl immediately following mencement of the siphon discharge,the force of the falling water impinging on the surface of the water in the bowl increases because its head is increased correspondingly to the drop in the water and its own mass is in no wise diminished and the subsequent action continues with increasing efiect to sweep out the water inthe bowl from the bottom thereof, continuing it even after the siphon has broken and serves to sweep the bowl nearly clean.

In the use of this construction also, all of the water is utilized for cleansing purposes and none of it is wasted as is the case with the jet construction.

the com In the drawings z-Figure 1, is a'longituv dinal vertical section. Fig. 2, is ahorizontal section at the line 22 of Fig-1. Fig. 3, is aohorizontal section at the lined-3 of Fig. 1. Fig. 4, is through the water discharge from the flushing rim into the bowl at the front of the bowl.

The bowl may be of any commercial type of reverse trap or wash-down bowl. flushing rim- 1 extends around the sides of the bowl from the water inlet 2, furnished with the ordinary side openingsfor the discharge into the sides of the bowl and with an opening 4; at the extreme end, which is a developed cross section The preferably slightly below the general plane of the openings around the rim, the passage being here slightly depressed to lower this opening. Above the opening and on the under side of the rim closure is a slight boss 5 which serves to bend the upper boundary of the water passage downward to correspond to the bend in the lower boundary of the passage, except that the boss is directly over the opening and at the extreme front of the bowl so that the water coming from 7 or 6 instead of meeting directly is deflected slightly before it meets and the meeting water drops more directly into a groove between cheek walls 9 and 10 which rise from the side of the groove and expand from its bottom to form the required curvature of the interior of the bowl. The bottom line of the groove extends in a curve from the top of the groove until the groove vanishes in the curve at the extreme bottom and opposite the mouth of the siphon passage 12. Water entering the flushingrim 1 is conveyed to the front, and then because of the curvature of the passage at the front is directed clownward, or in case the boss 5 is omitted the two streams of water meeting result in a falling stream that is directed into the mouth of the groove 13 between the cheeks 9 and 10 of the bowl, and strikes the water which will be substantially at the line 22 of Fig. 1; the force of the falling water carried to the bottom and thence, because of the curvature along the bottom of the siphon conduit 12, begins to force the water over the dam 14: immediately and this accentuates the flow over the dam due to the rise of the water as the quantity of water in the bowl is increased by the introduction of flushing water. After the siphon has acted and the bowl is nearly empty the water from the front of the flushing rim still continues to act with added force, because its mass is not now opposed by so great a mass of water in the bowl and the flow continues over the dam long after it would otherwise cease.

'With the construction shown and described the action of the water in discharging is long-continued and takes place with no gyratory action in the bowl. Moreover, the tendency which sometimes exists on the breaking of the siphon to return the water in the up leg 12 to the bowl is largely reduced because of the expulsive force of the water dropping along the groove. lhe flushing rim 1 should curve regularly and be as free from abrupt angles as it is possible to make it, consistent with the necessity of passing around the edge of the bowl.

What I claim is 1. In a closet bowl provided with a trap Copies of this patent may be obtained for channel,

.and projecting inwardly to relative five cents each, by addressing the outlet in combination with a discharge passage thereof, a grooved passage extending at a point in the bowl immediately underneath a nozzle formed in the flushing rim below the body of such rim, said nozzle and flushing rim, the bottom of said passage having a cycloidal curve and its sides a reverse curve thereby widening and deepening said channel at a point midway between sai nozzle and the bottom of the bowl, the said passage narrowing and terminating in the bottom of the bowl where the side walls of the channel merge into said bottom and thus adapted to direct a stream of water from the flushing rim and from the sides of said passage into it and delivering the same to the mouth of the discharge passage,

substantially aS described.

2. A water closet bowl of the character described having a water supply, an upleg constituting an outlet, the opposite portion of the bowl having a channel in its surface arranged to conduct water to the mouth of the up-leg, said channel having a curved bottom and cheek portions or sides merging into the bottom of the bowl proper and projecting inwardly to relatively high positions at a point downwardly beyond the inlet of the channel to give increased depth to and concentrate the water flowing into the and the walls of the channel also contracting at the discharge end of the channel and merging into the bottom of the bowl to emit the water as a core or jet to force and entrain the normal water and contents in the bowl up the up-leg.

3. A water closet bowl of the character described having a water supply and a rearwardly curved up leg constituting an outlet, there being a channel formed in the front portion of the bowl arranged to convey water to the mouth of the up leg, said channel having acurved bottom and cheek portions merging into the bottom of the bowl proper high positions at a point beyond the outlet of the channel whereby to give increased depth to and concentrate the water flowing into the channel, the walls of the channel contracting adjacent its discharge end and merging into the bottom of the bowl whereby to omit the water as a jet to force and entrain the normal water and contents in the bowl up the up leg.

In testimony whereof, 1 sign this specification in the presence of two witnesses.

CHARLES H. MUCKENHIRN.

Witnesses:

CHARLES F. BURTON, LOTTA LEE BRAY.

Commissioner of Patents.

Washington, 11. 0; 

